Topics: Radio Program, Firearms, American political writers, Liberal democracies, Republics, Member states...

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Feb 11, 2019
02/19

by
Mills, Terence C

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viii, 247 p. : 24 cm. +

Topics: Finance -- Econometric models, Stochastic processes, Time-series analysis

Source: removedNEL

By the use of a semi-martingale property of the Kolmogorov supremum, the results of Pyke on the weak convergence of the empirical process with random sample size are simplified and extended to the case of p(1)-dimensional stochastic vectors.

Topics: DTIC Archive, Sen, Pranab K, NORTH CAROLINA UNIV AT CHAPEL HILL, *STOCHASTIC PROCESSES, RANDOM...

Topics: Radio Program, Association of Commonwealth Universities, Stock market, Harvard University alumni,...

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Topics: Radio Program, American billionaires, Mass media, Chief executive officers, Stochastic processes,...

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Topics: Radio Program, Political science, Elections, Human geography, G20 nations, Development, Heads of...

9
9.0

Apr 28, 2020
04/20

by
Goel, Narendra S., 1941-

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x, 269 pages 24 cm

Topics: stochastische processen, stochastic processes, Applied Mathematics, Toegepaste wiskunde, Stochastic...

9
9.0

Sep 26, 2020
09/20

by
Christakos, George

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xxvii, 474 pages : 24 cm

Topics: Earth sciences -- Mathematical models, Random fields -- Mathematical models, Stochastic processes...

Topics: Radio Program, American talk radio hosts, Audio storage, Legal entities, Financial institutions,...

The objective of the research has been to develop engineering methodologies applicable, but not limited, to aerospace automatic control design problems in which there are performance specifications requiring precise control of system behavior in the presence of stochastic disturbances (e.g., wind gusts) and large-but-bounded uncertainties in the dynamical response of the system (e.g., parameter uncertainty, unmodeled nonlinearities, and so forth). A cohesive body of theory has been developed...

Topics: DTIC Archive, Safonov,M G, UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF ELECTRICAL...

In modeling total claims and compensation costs associated with hazardous material exposures, there are two sources of random variation. First, the claims are adjudicated at random points in time and secondly, the actual compensation awarded in each case is random. The Compound Poisson Process (CPP) is a useful model for describing total claim costs in the insurance industry when all types of claims are considered together. However, for specific claim types, the successive awards are likely to...

Topics: DTIC Archive, Angus, John E, NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA, *STOCHASTIC PROCESSES,...

1,717
1.7K

Jun 21, 2010
06/10

by
Biderman, V. L., et al

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Construction and performance of automobile tires

Topics: HUMAN PERFORMANCE, OPTIMAL CONTROL, TASKS, LEARNING THEORY, MANUAL CONTROL, STOCHASTIC PROCESSES,...

This report develops and analyzes a general stochastic model of a production system. The model is closely related to Harrison's (5) assembly-like queueing network, the principal difference being that here we assume all storage buffers have finite capacity. Our attention is focused on a vector stochastic process Z whose components are the contents of the various storage buffers (as functions of time). The principal result is a weak convergence theorem of the type developed by Iglehart and Whitt...

Topics: DTIC Archive, Wenocur,Michael Louis, STANFORD UNIV CA, *QUEUEING THEORY, *PRODUCTION, *MODELS,...

In this article it is demonstrated that the compressive response of unidirectionally reinforced composites may initiate in a micro-buckling mode and subsequently switch to a micro-kinked configuration. The foregoing possibility derives from a mechanics model which considers initial fibers misalignments, non-linear shear response of the matrix, shear deformable fibers and stochastic fiber spacings. The latter non-uniformity in fiber spacings plays a major role in the generation of fiber kinks....

Topics: DTIC Archive, Chung, I, TENNESSEE UNIV KNOXVILLE DEPT OF ENGINEERING SCIENCE AND MECHANICS,...

Some prediction problems of an important class of non-stationary processes, namely periodically correlated processes were studied. (AN)

Topics: DTIC Archive, Miamee, Abol G., HAMPTON UNIV VA DEPT OF MATHEMATICS, *STOCHASTIC PROCESSES,...

An algorithm for steady-state analysis of M/M/c nonpreemptive two-priority queues with heterogeneous rates is presented. It is based on a computational analysis a la Neuts which exploits a partition of the full state space into blocks. Both M/G/1 and GI/M/1 paradigm block structures arise and are exploited in the analysis. The mean number of waiting customers and the mean delay for each priority class are calculated. This gives a partial solution to the 'probabilistic puzzler' posed by D. P....

Topics: DTIC Archive, Miller,Douglas R, GEORGE WASHINGTON UNIV WASHINGTON D C PROGRAM IN LOGISTICS,...

The formulation of the decision making of a failure detection process as a Bayes sequential decision problem (BSDP) provides a simple conceptualization of the decision rule design problem. As the optimal Bayes rule is not computable, a methodology that is baed on the Baysian approach and aimed at a reduced computational requirement is developed for designing suboptimal rules. A numerical algorithm is constructed to facilitate the design and performance evaluation of these suboptimal rules. The...

Topics: DTIC Archive, Chow,Edward Y, MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INFORMATION AND DECISION...

Response of the flow variables to external driving forces is non-linear for shear flows. For the turbulent boundary layer case, surface shear stress fluctuations of magnitude as great as the mean value are observed. For flow near the surface Prandtl's turbulent boundary layer approach of employing averaged Reynolds equation and a turbulence closure model is insufficient to account for surface shear fluctuations. A model which incorporates a discrete time dependent solution for the inner region...

Topics: DTIC Archive, Chien,Ho-Chen, COLORADO STATE UNIV FORT COLLINS DEPT OF CIVIL ENGINEERING, *TIME...

Simulation techniques utilize methods of optimization in several aspects. Validation of simulation models, estimation of models and design of simulation experiments require optimization. Methods of optimization are discussed with special applications to simulation. Criteria of optimization, classical methods of optimization, numerical methods, and optimal search procedures are discussed. (Author)

Topics: DTIC Archive, Rustagi, J S, OHIO STATE UNIV COLUMBUS DEPT OF STATISTICS, *MATHEMATICAL MODELS,...

3
3.0

May 8, 2020
05/20

by
Krylov, N. V. (Nikolai Vladimirovich)

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xii, 230 pages ; 26 cm

Topics: Processus stochastiques, Stochastic processes, Stochastischer Prozess, PROCESSOS ESTOCASTICOS

Effective aerospace health management integrates component subsystem and system level health monitoring strategies, consisting of anomaly/diagnostic/prognostic technologies, with an integrated modeling architecture that addresses failure mode mitigation and life cycle costs. Included within such health management systems will be various failure mode diagnostic and prognostic (DIP) approaches ranging from generic signal processing and experience-based algorithms to the more complex knowledge and...

Topics: DTIC Archive, Roemer, Michael J., Kacprzynski, Gregory J., Nwadiogbu, Emmanuel O., Bloor, George,...

Symposium T Objective: To showcase recent developments in statistical mechanical modeling of non-equilibrium stmctures and processes in materials (including film growth, solidification processes, and bulk defect dynamics).

Topics: DTIC Archive, Bartelt, Maria, MATERIALS RESEARCH SOCIETY WARRENDALE PA, *STATISTICAL MECHANICS,...

If the number of factors in an experiment is increased, does it necessarily follow that the size of the experiment must increase to achieve a satisfactory analysis? In some common situations the answer is No. The present paper discusses a model suggested by medical diagnostic problems in which the answer is Yes: indeed, the increase in size is exponentially fast. The conclusion is drawn that statisticians should be cautions before embarking on the study of data with large numbers of factors...

Topics: DTIC Archive, Lindley,D V, WISCONSIN UNIV-MADISON MATHEMATICS RESEARCH CENTER, *PARAMETRIC...

Topics: DTIC Archive, Moricz,F, JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MATHEMATICAL SCIENCES, *RANDOM...

The limiting behaviour (as the sample size increases) of the BLUE of the regression coefficients is investigated in the case that derivative information is not available. Using the results of Barrow and Smith (1979) on the asymptotic properties of optimal quadrature formulas several results obtained by Eubank, Smith and Smith (1981) are extended to a multiparameter setting and a wider class of processes which includes multiple integrals of Brownian motion. The asymptotic behaviour of the...

Topics: DTIC Archive, Eubank,Randall L, SOUTHERN METHODIST UNIV DALLAS TEX DEPT OF STATISTICS,...

Sparse coding-that is, modelling data vectors as sparse linear combinations of basis elements-is widely used in machine learning, neuroscience, signal processing, and statistics. This paper focuses on learning the basis set, also called dictionary, to adapt it to specific data, an approach that has recently proven to be very effective for signal reconstruction and classification in the audio and image processing domains. This paper proposes a new online optimization algorithm for dictionary...

Topics: DTIC Archive, MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS, *LEARNING...

In this paper, we develop nonlinear constitutive equations and resulting system models quantifying the nonlinear and hysteretic field-displacement relations inherent to lead zirconate titanate (PZT) devices employed in atomic force microscope stage mechanisms. We focus specifically on PZT rods utilizing d(sub 33) motion and PZT shells driven in d(sub 31) regimes, but the modeling framework is sufficiently general to accommodate a variety of drive geometries. In the first step of the model...

Topics: DTIC Archive, Smith, Ralph C, NORTH CAROLINA STATE UNIV AT RALEIGH DEPT OF MATHEMATICS, *STOCHASTIC...

The objective was to develop general theories of sequential hypothesis testing and quickest change detection for complex multi-population stochastic models, as well as to apply these theories to automatic threat detection and classification with low false alarm and miss-classification rates. More specifically, we addressed complex stochastic models that include: multi-population/multi-channel models; multi-hypothesis scenarios; general stochastic models with non-stationary and dependent...

Topics: DTIC Archive, UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF MATHEMATICS, *STOCHASTIC...

Topics: Radio Program, Mass media, Property law, Health, Networks, Wireless networking, Oral hygiene,...

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Topics: Radio Program, Transfusion medicine, Generally Accepted Accounting Principles, Income, Hematology,...

Topics: Radio Program, Countries in Africa, Liberal democracies, G20 nations, Harvard University alumni,...

Topics: Radio Program, Association of Commonwealth Universities, Sex crimes, Stochastic processes,...

Topics: Radio Program, Association of Commonwealth Universities, Sex crimes, Criminology, Livestock,...

Topics: Radio Program, East Asian countries, Association of Commonwealth Universities, Stock market,...

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01:00:00AM-04:00:00AM GMT — As BBC Radio 5 live 20/02/2020 BBC Radio Norfolk joins BBC Radio 5 live.

Topics: Radio Program, Writers from New York City, American politicians, American racing drivers, NASCAR...

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140

Nov 14, 2013
11/13

by
Albert R. Meyer

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Random Walks are used to model situations in which an object moves in a sequence of steps in randomly chosen directions. Many phenomena can be modeled as a random walk and we will see several examples in this chapter.

Topics: Maths, Statistics and Probability, Stochastic Analysis, Probability, Stochastic Processes, Some...

Source: http://www.flooved.com/reader/1766

Topics: Radio Program, Meteorology, Theatrical professions, Broadcasting, Consciousness studies, Christian...

This report deals with the simulation of medical systems, both within the military and the civilian world, complete with scheduling problems and employment of optimal techniques to improve clinic performance based upon several criteria, including time in clinic per patient and assets required to serve the patient population. Problems of this sort fall into a category known as hybrid systems, which are characterized as problems having both discrete and continuous elements. Additionally, hybrid...

Topics: DTIC Archive, Rodin, Ervin Y, WASHINGTON UNIV ST LOUIS MO CENTER FOROPTIMIZATION AND SEMANTIC...

The research focused on long-range dependence, high variability and non-linear filtering in time series. Long-range dependence occurs when the low frequencies have a fundamental impact on the dependence structure of the data. There is high variability when the data is non-Gaussian and takes large values with high probability, for example when it is Pareto or has a stable distribution. The data can also be the output of a non-linear filter and hence possess non-linear characteristics. We studied...

Topics: DTIC Archive, Taqqu, Murad S, BOSTON UNIV MA, *STATISTICS, LOW FREQUENCY, STOCHASTIC PROCESSES,...

Four algorithms for simulating flicker FM phase noise (f(-3) spectrum) are given, two old and two new. Their Allan deviation and mean square time interval error (MSTIE) are examined. The MSTIE shows that one of the old algorithms has deficient long-term phase deviations on average. The Allan deviation does not reveal this deficiency.

Topics: DTIC Archive, Greenhall, Charles A, CALIFORNIA INST OF TECH PASADENA JET PROPULSION LAB, *FAST...

There currently exists a variety of aircraft spares requirement calculation methods. All of these techniques are limited because their measure of effectiveness (expected backorders) does not translate to terms of aircraft availability. The most logical measure of effectiveness for the logistics system is the number of aircraft that can be supported in an operationally ready state for a given level of flying activity. There are several models that use aircraft availability as a measure of...

Topics: DTIC Archive, Presutti,Victor J, AIR FORCE LOGISTICS COMMAND WRIGHT-PATTERSON AFB OH DIRECTORATE OF...

An upper-asymptote parameter was added to the three-parameter logistic item response model. This four-parameter model was compared to the three-parameter model on four data sets. The fourth parameter increased the likelihood in only two of the four sets. Ability estimates for the students were generally unchanged by the introduction of the fourth parameter. (Author)

Topics: DTIC Archive, Barton,Mark A, EDUCATIONAL TESTING SERVICE PRINCETON NJ, *PARAMETRIC ANALYSIS,...

In a tracer-directed fire mode, the gunner plays the role of a conventional tracker and a lead angle computer. Tracer rounds are fired continuously by the gunner to provide an additional observation channel. In the event of repeated observation interruption, via blanking the target from the optical display, the gunner's performance is considerably degraded. In this report, a gunner model is designed which consists of a reduced-order observer, a linear feedback controller, and a remnant noise...

Topics: DTIC Archive, Wei, Kuang C, SYSTEMS RESEARCH LABS INC DAYTON OH, *MATHEMATICAL MODELS,...

This study uses a computer simulation of a strapdown laser gyro inertial reference system to analyze the errors generated as a result of highly dynamic flight profiles. A stochastic error model using state-of-the-art inertial sensors is developed in detail and implemented in software. SOFE, a generalized simulation program, was used to implement both a Monte Carlo simulation and a covariance analysis. The Monte Carlo method was selected to perform the error analysis. Two highly dynamic flight...

Topics: DTIC Archive, Ryan, John E, AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING,...

We will survey a variety of multiserver models in which the arrival stream is a Poisson process. In particular, we will consider the Erlang loss model in which arrivals finding all servers busy are lost. In this system, we assume a general service distribution. We will also consider finite and infinite capacity versions of this model. Another model of this type is the shared processor system in which service is shared by all customers. Another model to be considered is the G/M/K in which...

Topics: DTIC Archive, Ross,Sheldon M, CALIFORNIA UNIV BERKELEY OPERATIONS RESEARCH CENTER, *QUEUEING...

This study examined the effect a variety of induced velocity shears had on salt finger formation. Two harmonic, single frequency velocity profiles were utilized under varied shear strength and angular frequency. The third multi-frequency experiment employed a stochastic shear wave field. This model used frequencies that conformed to the GM spectral model for internal waves with an initial random phase distribution, modeling an environment representative of typical oceanic conditions. These...

Topics: DTIC Archive, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *DIFFUSION, *HEAT FLUX, *OCEANOGRAPHY, *SHEAR...

The Office of the Chief of Naval Operations, Capability Analysis and Assessment Division (OPNAV N81), along with other DOD organizations, utilizes the Synthetic Theater Operations Research Model (STORM) as its primary campaign analysis tool. STORM aids senior-level policymakers in evaluating military strategy and capabilities, force structure, and operational effectiveness. This is a proof-of-concept thesis that determines the feasibility of implementing a simple design of experiments within...

Topics: DTIC Archive, NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OPERATIONS RESEARCH, *MILITARY...

There have been a number of previous successful efforts that show how fuzzy logic concepts have homomorphic-like stochastic correspondences, utilizing one-point coverages of appropriately constructed random sets. Independent of this and fuzzy logic considerations in general, boolean relational event algebra (BREA) has been introduced within a stochastic setting for representing prescribed compositional functions of event probabilities by single compounded event probabilities. In the special...

Topics: DTIC Archive, SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA, *REASONING, *PROBABILITY, *FUZZY...

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310

May 30, 2011
05/11

by
Russell, Dennis A.; Connell, John W.; Fogdall, Lawrence B.; Winkler, Werner W

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The response of coated thin polymer films to ultraviolet (UV), electron and proton radiation simultaneously has been evaluated, with selected measurements in situ. Exposure was intended to simulate the electron and proton radiation environment near the Earth-Sun Lagrangian points (LI and L2) for five years and approximately 1000 equivalent solar hours (ESH) UV. These orbital environments are relevant to several potential missions such as the Next Generation Space Telescope and Geomagnetic Storm...

Topics: BUCKLING, STOCHASTIC PROCESSES, TENSILE STRENGTH, COMPRESSION LOADS, THIN WALLS, METAL SHELLS,...

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577

May 31, 2011
05/11

by
Nelson, Michael L

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Current discussion of digital libraries (DLs) is often dominated by the merits of the respective storage, search and retrieval functionality of archives, repositories, search engines, search interfaces and database systems. While these technologies are necessary for information management, the information content is more important than the systems used for its storage and retrieval. Digital information should have the same long-term survivability prospects as traditional hardcopy information...

Topics: BOUNDARY LAYER FLOW, SOLUTES, STABILITY, VIBRATION, FLUID DYNAMICS, FLUID FLOW, INCOMPRESSIBLE...